Muma Pădurii (The Mother of The Forest) is portrayed as the villain in fairy tales and leads a lonely life in the forest. Her appearance may vary from tale to tale but every time she is described as scary being, with branches caught in her hair, ugly and very wicked. In some regions of the country it is believed that she was a magical creature that, if caught, could fulfill a desire.

Image by Manuela Micu

Solomonarii are the characters who have human aspect and which, according to the Romanian folklore, are the wizards who can control the meteorological phenomena, especially the rain, the hail, the storms.
According to the legend, a Solomonar is accustomed to come from the "Other Land" through villages to beg, testing people. If he was treated badly, the wizard brought hail and storms, but in spite of this he was a positive character with little trouble controlling anger.

Image by Manuela Micu
Image by Manuela Micu

In spite of their grotesque appearance and their large dimensions, zgripțor / zgripțoroaică have "generally" recieved positive roles in Romanian folklore. Some fairy tales cultivate the idea of a guardian being, who helps Prince Charming in his journey as a reward because he saved his/her babies.

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Ursitoarele (fairies) are three spirits that predict the destiny of newborns. Three days after the baby was born, his godmother will prepare a festive meal with all sorts of goodies to invite the three fairies in the house. The mother will sleep with her baby and this fairies will show up in her dream. Another theory suggests that they bring "gifts" to the newborn - intelligence, wisdom, luck, etc.

Image by Manuela Micu

Apa Sâmbetei, "Water of the Sabbath" or "Water of the Dead" is a infernal river that flows into Hell, present in the Romanian folklore. Legends say that this water springs from the roots of the Tree of the World as clean water, and surrounds the earth three times, and after it reaches Hell, it turns into a river of flames.

Image by Manuela Micu

Sources:
http://adevarul.ro/locale/targoviste/cum-aparut-inseamna-fapt-apa-sambetei-izvoraste-radacinile-bradului-lumii-trece-iad-1_57f8a0175ab6550cb85d30ef/index.html
http://www.metalhead.ro/articole/creaturi-mitologice-romanesti-aid85042